private void ProcessExtended(IPeerWireClient client, int commandLength, byte[] payload)
{
Int32 msgId = payload[0];
var buffer = payload.GetBytes(1, commandLength - 1);
if (msgId == 0)
{
var extendedHandshake = (BDict)BencodingUtils.Decode(buffer);
var mDict = (BDict)extendedHandshake["m"];
foreach (KeyValuePair <string, IBencodingType> pair in mDict)
{
var i = (BInt)pair.Value;
_extIncoming.Add(new ClientProtocolIDMap(client, pair.Key, (byte)i));
var ext = FindIBTExtensionByProtocol(pair.Key);
ext?.OnHandshake(client, buffer);
}
}
else
{
var protocol = FindIBTProtocolByMessageID(msgId);
var ext = FindIBTExtensionByProtocol(protocol);
ext?.OnExtendedMessage(client, buffer);
}
}
public void OnHandshake(IPeerWireClient peerWireClient, byte[] handshake)
{
var dict = (BDict)BencodingUtils.Decode(handshake);
if (dict.ContainsKey(METADATA_SIZE_KEY))
{
var size = (BInt)dict[METADATA_SIZE_KEY];
_metadataSize = size;
_pieceCount = (Int64)Math.Ceiling((double)_metadataSize / 16384);
}
RequestMetaData(peerWireClient);
}
public void OnHandshake(IPeerWireClient peerWireClient, byte[] handshake)
{
BDict dict = (BDict)BencodingUtils.Decode(handshake);
if (dict.ContainsKey("metadata_size"))
{
BInt size = (BInt)dict["metadata_size"];
this._metadataSize = size;
this._pieceCount = (Int64)Math.Ceiling((double)this._metadataSize / 16384);
}
this.RequestMetaData(peerWireClient);
}
public void OnExtendedMessage(IPeerWireClient peerWireClient, byte[] bytes)
{
BDict dict = (BDict)BencodingUtils.Decode(bytes);
if (dict.ContainsKey("added"))
{
var trackerList = (BList)dict["added"];
foreach (var tracker in trackerList)
{
TrackerAdded?.Invoke(peerWireClient, this, tracker.ToString());
}
}
}
public void OnExtendedMessage(IPeerWireClient peerWireClient, byte[] bytes)
{
Int32 startAt = 0;
BencodingUtils.Decode(bytes, ref startAt);
_piecesReceived += 1;
if (_pieceCount >= _piecesReceived)
{
_metadataBuffer = _metadataBuffer.Concat(bytes.Skip(startAt)).ToArray();
}
if (_pieceCount == _piecesReceived)
{
var metadata = (BDict)BencodingUtils.Decode(_metadataBuffer);
MetaDataReceived?.Invoke(peerWireClient, this, metadata);
}
}
public void OnExtendedMessage(IPeerWireClient peerWireClient, byte[] bytes)
{
BDict d = (BDict)BencodingUtils.Decode(bytes);
if (d.ContainsKey("added") && d.ContainsKey("added.f"))
{
BString pexList = (BString)d["added"];
BString pexFlags = (BString)d["added.f"];
for (int i = 0; i < pexList.ByteValue.Length / 6; i++)
{
UInt32 ip = Unpack.UInt32(pexList.ByteValue, i * 6, Unpack.Endianness.Little);
UInt16 port = Unpack.UInt16(pexList.ByteValue, (i * 6) + 4, Unpack.Endianness.Big);
byte flags = pexFlags.ByteValue[i];
IPEndPoint ipAddr = new IPEndPoint(ip, port);
if (Added != null)
{
Added(peerWireClient, this, ipAddr, flags);
}
}
}
if (d.ContainsKey("dropped"))
{
BString pexList = (BString)d["dropped"];
for (int i = 0; i < pexList.ByteValue.Length / 6; i++)
{
UInt32 ip = Unpack.UInt32(pexList.ByteValue, i * 6, Unpack.Endianness.Little);
UInt16 port = Unpack.UInt16(pexList.ByteValue, (i * 6) + 4, Unpack.Endianness.Big);
IPEndPoint ipAddr = new IPEndPoint(ip, port);
if (Dropped != null)
{
Dropped(peerWireClient, this, ipAddr);
}
}
}
}
public static Torrent ReadTorrent(string filename)
{
// Читаем файл торрента и берем необходимый словарь info
List <LostFile> files = new List <LostFile>();
BDict torrent = (BDict)BencodingUtils.DecodeFile(filename, Encoding.UTF8);
BDict fileInfo = (BDict)torrent["info"];
string name = ((BString)fileInfo["name"]).Value;
int pieceLength = (int)((BInt)fileInfo["piece length"]).Value;
// Перечитываем торрент еще раз, чтобы взять хеш в нужном виде
torrent = (BDict)BencodingUtils.DecodeFile(filename, Encoding.GetEncoding(437));
char[] pieces = ((BString)((BDict)torrent["info"])["pieces"]).Value.ToCharArray();
if (fileInfo.ContainsKey("files")) // Multifile torrent
{
BList filesData = (BList)fileInfo["files"];
long begin = 0;
foreach (BDict file in filesData)
{
BList filePaths = (BList)file["path"];
long length = ((BInt)file["length"]).Value;
string fullPath = name;
foreach (BString partOfPath in filePaths)
{
fullPath += @"\" + partOfPath.Value;
}
files.Add(new LostFile(fullPath, length, begin));
begin += length;
}
}
else // Singlefile torrent
{
long Length = ((BInt)fileInfo["length"]).Value;
files.Add(new LostFile(name, Length, 0));
}
return(new Torrent(name, files, pieceLength, pieces, filename));
}
public void OnExtendedMessage(IPeerWireClient peerWireClient, byte[] bytes)
{
BDict dictionary = (BDict)BencodingUtils.Decode(bytes);
if (!dictionary.ContainsKey(ADDED_KEY) && !dictionary.ContainsKey(ADDED_FLAGS_KEY) && !dictionary.ContainsKey(DROPPED_KEY))
{
return;
}
if (dictionary.ContainsKey(ADDED_KEY) && dictionary.ContainsKey(ADDED_FLAGS_KEY))
{
var pexList = (BString)dictionary[ADDED_KEY];
var pexFlags = (BString)dictionary[ADDED_FLAGS_KEY];
for (int i = 0; i < pexList.ByteValue.Length / 6; i++)
{
var ip = Unpack.UInt32(pexList.ByteValue, i * 6, Unpack.Endianness.Little);
var port = Unpack.UInt16(pexList.ByteValue, (i * 6) + 4, Unpack.Endianness.Big);
var flags = pexFlags.ByteValue[i];
var ipAddr = new IPEndPoint(ip, port);
Added?.Invoke(peerWireClient, this, ipAddr, flags);
}
}
else //if (d.ContainsKey(DROPPED_KEY))
{
BString pexList = (BString)dictionary[DROPPED_KEY];
for (int i = 0; i < pexList.ByteValue.Length / 6; i++)
{
var ip = Unpack.UInt32(pexList.ByteValue, i * 6, Unpack.Endianness.Little);
var port = Unpack.UInt16(pexList.ByteValue, (i * 6) + 4, Unpack.Endianness.Big);
var ipAddr = new IPEndPoint(ip, port);
Dropped?.Invoke(peerWireClient, this, ipAddr);
}
}
}
public void OnExtendedMessage(IPeerWireClient peerWireClient, byte[] bytes)
{
Int32 startAt = 0;
BencodingUtils.Decode(bytes, ref startAt);
this._piecesReceived += 1;
if (this._pieceCount >= this._piecesReceived)
{
this._metadataBuffer = this._metadataBuffer.Concat(bytes.Skip(startAt)).ToArray();
}
if (this._pieceCount == this._piecesReceived)
{
BDict metadata = (BDict)BencodingUtils.Decode(this._metadataBuffer);
if (MetaDataReceived != null)
{
MetaDataReceived(peerWireClient, this, metadata);
}
}
}
public float GetTorrentSize(string p)
{
long length = 0;
BDict torrentFile = null;
BList b;
try
{
torrentFile = BencodingUtils.DecodeFile(p) as BDict;
}
catch (Exception e)
{
Tool.MoveFile("decodeErr", p);
return(0);
}
if (torrentFile == null)
{
Tool.MoveFile("decodeErr", p);
return(0);
}
if ((torrentFile["info"] as BDict).ContainsKey("files"))
{
b = (BList)(torrentFile["info"] as BDict)["files"];
for (int i = 0; i < b.Count; i++)
{
BDict bd = (BDict)b[i];
length = length + ((BInt)bd["length"]).Value;
}
}
else
{
length = ((BInt)(torrentFile["info"] as BDict)["length"]).Value;
}
return(length / 1024 / 1024);
}
public bool OnHandshake(IPeerWireClient client)
{
var handshakeDict = new BDict();
var mDict = new BDict();
byte i = 1;
foreach (var extension in _protocolExtensions)
{
_extOutgoing.Add(new ClientProtocolIDMap(client, extension.Protocol, i));
mDict.Add(extension.Protocol, new BInt(i));
i++;
}
handshakeDict.Add("m", mDict);
var handshakeEncoded = BencodingUtils.EncodeString(handshakeDict);
var handshakeBytes = Encoding.ASCII.GetBytes(handshakeEncoded);
var length = 2 + handshakeBytes.Length;
client.SendBytes((new byte[0]).Cat(Pack.Int32(length, Pack.Endianness.Big).Cat(new[] { (byte)20 }).Cat(new[] { (byte)0 }).Cat(handshakeBytes)));
return(true);
}
public void RequestMetaData(IPeerWireClient peerWireClient)
{
var sendBuffer = new byte[0];
for (Int32 i = 0; i < _pieceCount; i++)
{
var masterBDict = new BDict
{
{ MESSAGE_TYPE_KEY, (BInt)0 },
{ PIECE_KEY, (BInt)i }
};
var encoded = BencodingUtils.EncodeString(masterBDict);
var buffer = Pack.Int32(2 + encoded.Length, Pack.Endianness.Big);
buffer = buffer.Concat(new byte[] { 20 }).ToArray();
buffer = buffer.Concat(new[] { _parent.GetOutgoingMessageID(peerWireClient, this) }).ToArray();
buffer = buffer.Concat(Encoding.GetEncoding(1252).GetBytes(encoded)).ToArray();
sendBuffer = sendBuffer.Concat(buffer).ToArray();
}
peerWireClient.SendBytes(sendBuffer);
}
public bool OnHandshake(IPeerWireClient client)
{
BDict handshakeDict = new BDict();
BDict mDict = new BDict();
byte i = 1;
foreach (IBTExtension extension in this._protocolExtensions)
{
this._extOutgoing.Add(new ClientProtocolIDMap(client, extension.Protocol, i));
mDict.Add(extension.Protocol, new BInt(i));
i++;
}
handshakeDict.Add("m", mDict);
string handshakeEncoded = BencodingUtils.EncodeString(handshakeDict);
byte[] handshakeBytes = Encoding.ASCII.GetBytes(handshakeEncoded);
Int32 length = 2 + handshakeBytes.Length;
client.SendBytes((new byte[0]).Cat(PackHelper.Int32(length).Cat(new[] { (byte)20 }).Cat(new[] { (byte)0 }).Cat(handshakeBytes)));
return(true);
}
public void RequestMetaData(IPeerWireClient peerWireClient)
{
byte[] sendBuffer = new byte[0];
for (Int32 i = 0; i < this._pieceCount; i++)
{
BDict masterBDict = new BDict
{
{ "msg_type", (BInt)0 },
{ "piece", (BInt)i }
};
string encoded = BencodingUtils.EncodeString(masterBDict);
byte[] buffer = PackHelper.Int32(2 + encoded.Length);
buffer = buffer.Concat(new byte[] { 20 }).ToArray();
buffer = buffer.Concat(new[] { this._parent.GetOutgoingMessageID(peerWireClient, this) }).ToArray();
buffer = buffer.Concat(Encoding.GetEncoding(1252).GetBytes(encoded)).ToArray();
sendBuffer = sendBuffer.Concat(buffer).ToArray();
}
peerWireClient.SendBytes(sendBuffer);
}
public void process(string directoryStr, bool ifCheckHis)
{
string md5;
if (md5Set.Count == 0)
{
getList();
}
startTime = DateTime.Now;
String[] path = Directory.GetFiles(directoryStr, "*", SearchOption.TopDirectoryOnly);
foreach (String p in path)
{
if (p.EndsWith(".torrent"))
{
if (Path.GetFileNameWithoutExtension(p).ToLower().Contains(".sd."))
{
Tool.moveFile("SD", p);
continue;
}
md5 = GetMd5(p);
if (md5Set.Contains(md5))
{
Tool.moveFile("Md5Duplicate", p);
continue;
}
if (!Path.GetFileNameWithoutExtension(p).Replace("rarbg.to", "").Contains("."))
{
Tool.moveFile("invalid", p);
}
BDict torrentFile = null;
bool hasBigFile = false;
try
{
torrentFile = BencodingUtils.DecodeFile(p) as BDict;
}
catch (Exception e)
{
Tool.moveFile("decodeErr", p);
}
if (torrentFile != null)
{
bool flag = true;
BList b;
List <HisTorrent> listTorrent = new List <HisTorrent>();
if ((torrentFile["info"] as BDict).ContainsKey("files"))
{
b = (BList)(torrentFile["info"] as BDict)["files"];
for (int i = 0; i < b.Count; i++)
{
BDict bd = (BDict)b[i];
long length = ((BInt)bd["length"]).Value;
if (length > 25 * 1024 * 1024)
{
hasBigFile = true;
}
BList list = (BList)bd["path"];
string s = ((BString)list[list.Count - 1]).Value;
HisTorrent trt = new HisTorrent();
trt.CreateTime = DateTime.Now;
trt.Path = p;
trt.Size = length;
if (s.LastIndexOf('.') > 0)
{
trt.File = s.Substring(0, s.LastIndexOf('.'));
trt.Ext = s.Substring(s.LastIndexOf('.'));
}
else
{
trt.File = s;
}
listTorrent.Add(trt);
if (!check(trt, ifCheckHis))
{
flag = false;
break;
}
}
}
else
{
hasBigFile = true;
HisTorrent trt = new HisTorrent();
trt.CreateTime = DateTime.Now;
trt.Path = p;
trt.Size = ((BInt)(torrentFile["info"] as BDict)["length"]).Value;
string name = ((BString)(torrentFile["info"] as BDict)["name"]).Value;
if (name.LastIndexOf('.') > 0)
{
trt.File = name.Substring(0, name.LastIndexOf('.'));
trt.Ext = name.Substring(name.LastIndexOf('.'));
}
else
{
trt.File = name;
}
listTorrent.Add(trt);
if (!check(trt, ifCheckHis))
{
flag = false;
}
}
if (!hasBigFile)
{
Tool.moveFile("noBigFile", p);
}
if (flag && hasBigFile)
{
foreach (HisTorrent his in listTorrent)
{
if (his.Size > 60 * 1024 * 1024)
{
if (ifCheckHis)
{
his.Md5 = md5;
DBHelper.insertTorrent(his);
}
try
{
md5Set.Add(md5);
dic.Add(Tool.filterName(his.File), his);
torrentNameDic.Add(his.FilteredFileName, his);
}catch (ArgumentException e)
{
dic.Remove(Tool.filterName(his.File));
dic.Add(Tool.filterName(his.File), his);
torrentNameDic.Remove(his.FilteredFileName);
torrentNameDic.Add(his.FilteredFileName, his);
}
}
}
}
}
else
{
Tool.moveFile("decodeErr", p);
}
}
}
}
public void OnHandshake(IPeerWireClient peerWireClient, byte[] handshake)
{
var dictionary = (BDict)BencodingUtils.Decode(handshake);
}
public void SendMessage(IPeerWireClient peerWireClient, IPEndPoint[] addedEndPoints, byte[] flags, IPEndPoint[] droppedEndPoints)
{
if (addedEndPoints == null && droppedEndPoints == null)
{
return;
}
BDict d = new BDict();
if (addedEndPoints != null)
{
byte[] added = new byte[addedEndPoints.Length * 6];
for (int x = 0; x < addedEndPoints.Length; x++)
{
addedEndPoints[x].Address.GetAddressBytes().CopyTo(added, x * 6);
BitConverter.GetBytes((ushort)addedEndPoints[x].Port).CopyTo(added, (x * 6) + 4);
}
d.Add("added", new BString {
ByteValue = added
});
}
if (droppedEndPoints != null)
{
byte[] dropped = new byte[droppedEndPoints.Length * 6];
for (int x = 0; x < droppedEndPoints.Length; x++)
{
droppedEndPoints[x].Address.GetAddressBytes().CopyTo(dropped, x * 6);
dropped.SetValue((ushort)droppedEndPoints[x].Port, (x * 6) + 2);
}
d.Add("dropped", new BString {
ByteValue = dropped
});
}
_parent.SendExtended(peerWireClient, _parent.GetOutgoingMessageID(peerWireClient, this), BencodingUtils.EncodeBytes(d));
}
public AnnounceInfo Announce(string url, string hash, string peerId, long bytesDownloaded, long bytesLeft, long bytesUploaded,
int eventTypeFilter, int ipAddress, int numWant, int listenPort, int extensions)
{
byte[] hashBytes = Pack.Hex(hash);
byte[] peerIdBytes = Encoding.ASCII.GetBytes(peerId);
String realUrl = url.Replace("scrape", "announce") + "?";
String hashEncoded = "";
foreach (byte b in hashBytes)
{
hashEncoded += String.Format("%{0:X2}", b);
}
String peerIdEncoded = "";
foreach (byte b in peerIdBytes)
{
peerIdEncoded += String.Format("%{0:X2}", b);
}
realUrl += "info_hash=" + hashEncoded;
realUrl += "&peer_id=" + peerIdEncoded;
realUrl += "&port=" + listenPort;
realUrl += "&uploaded=" + bytesUploaded;
realUrl += "&downloaded=" + bytesDownloaded;
realUrl += "&left=" + bytesLeft;
realUrl += "&event=started";
realUrl += "&compact=1";
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(realUrl);
webRequest.Accept = "*/*";
webRequest.UserAgent = "System.Net.Torrent";
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
Stream stream = webResponse.GetResponseStream();
if (stream == null)
{
return(null);
}
BinaryReader binaryReader = new BinaryReader(stream);
byte[] bytes = new byte[0];
while (true)
{
try
{
byte[] b = new byte[1];
b[0] = binaryReader.ReadByte();
bytes = bytes.Concat(b).ToArray();
}
catch (Exception)
{
break;
}
}
BDict decoded = (BDict)BencodingUtils.Decode(bytes);
if (decoded.Count == 0)
{
return(null);
}
if (!decoded.ContainsKey("peers"))
{
return(null);
}
if (!(decoded["peers"] is BString))
{
throw new NotSupportedException("Dictionary based peers not supported");
}
Int32 waitTime = 0;
Int32 seeders = 0;
Int32 leachers = 0;
if (decoded.ContainsKey("interval"))
{
waitTime = (BInt)decoded["interval"];
}
if (decoded.ContainsKey("complete"))
{
seeders = (BInt)decoded["complete"];
}
if (decoded.ContainsKey("incomplete"))
{
leachers = (BInt)decoded["incomplete"];
}
BString peerBinary = (BString)decoded["peers"];
return(new AnnounceInfo(GetPeers(peerBinary.ByteValue), waitTime, seeders, leachers));
}
public IDictionary <string, ScrapeInfo> Scrape(string url, string[] hashes)
{
Dictionary <String, ScrapeInfo> returnVal = new Dictionary <string, ScrapeInfo>();
String realUrl = url.Replace("announce", "scrape") + "?";
String hashEncoded = "";
foreach (String hash in hashes)
{
byte[] hashBytes = Pack.Hex(hash);
hashEncoded = hashBytes.Aggregate(hashEncoded, (current, b) => current + String.Format("%{0:X2}", b));
realUrl += "info_hash=" + hashEncoded + "&";
}
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(realUrl);
webRequest.Accept = "*/*";
webRequest.UserAgent = "System.Net.Torrent";
webRequest.Timeout = this.Timeout * 1000;
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
Stream stream = webResponse.GetResponseStream();
if (stream == null)
{
return(null);
}
BinaryReader binaryReader = new BinaryReader(stream);
byte[] bytes = new byte[0];
while (true)
{
try
{
byte[] b = new byte[1];
b[0] = binaryReader.ReadByte();
bytes = bytes.Concat(b).ToArray();
}
catch (Exception)
{
break;
}
}
BDict decoded = (BDict)BencodingUtils.Decode(bytes);
if (decoded.Count == 0)
{
return(null);
}
if (!decoded.ContainsKey("files"))
{
return(null);
}
BDict bDecoded = (BDict)decoded["files"];
foreach (String k in bDecoded.Keys)
{
BDict d = (BDict)bDecoded[k];
if (d.ContainsKey("complete") && d.ContainsKey("downloaded") && d.ContainsKey("incomplete"))
{
String rk = Unpack.Hex(BencodingUtils.ExtendedASCIIEncoding.GetBytes(k));
returnVal.Add(rk, new ScrapeInfo((uint)((BInt)d["complete"]).Value, (uint)((BInt)d["downloaded"]).Value, (uint)((BInt)d["incomplete"]).Value, ScraperType.HTTP));
}
}
return(returnVal);
}
/// <summary>
/// Background thread handling all incoming traffic
/// </summary>
private void ReceivePackets()
{
while (true)
{
try
{
// Get a datagram
receiveFrom = new IPEndPoint(IPAddress.Any, localPort);
byte[] data = udpClient.Receive(ref receiveFrom);
// Decode the message
Stream stream = new MemoryStream(data);
IBencodingType receivedMsg = BencodingUtils.Decode(stream);
string decoded = BencodingUtils.ExtendedASCIIEncoding.GetString(data.ToArray());
Log("Received message!");
//Log(decoded);
// t is transaction id : todo: check, since ports are reused
// y is e for error, r for reply, q for query
if (receivedMsg is BDict) // throws error.. todo: fix
{
BDict dictMsg = (BDict)receivedMsg;
if (dictMsg.ContainsKey("y"))
{
if (dictMsg["y"].Equals(new BString("e")))
{
// received error
Log("Received error! (ignored)");
}
else if (dictMsg["y"].Equals(new BString("r")))
{
// received reply
if (dictMsg.ContainsKey("r"))
{
if (dictMsg["r"] is BDict)
{
BDict dictMsg2 = (BDict)dictMsg["r"];
if (dictMsg2.ContainsKey("values") && dictMsg.ContainsKey("t"))
{
Log("Received list of peers for torrent!");
countRecvPeerPackets++;
BList peerAdrs = (BList)dictMsg2["values"];
UpdateTorrentPeerList(peerAdrs, (BString)dictMsg["t"]);
}
else if (dictMsg2.ContainsKey("nodes") && dictMsg.ContainsKey("t"))
{
// could be an answer to find node or get peers
Log("Received list of nodeID & IP & port!");
countRecvNodePackets++;
BString nodeIDString = (BString)dictMsg2["nodes"];
UpdateContactList(nodeIDString, (BString)dictMsg["t"]);
}
else
{
}
}
else
{
}
}
}
else if (dictMsg["y"].Equals(new BString("q")))
{
// received query
Log("Received query! (ignored)");
}
}
}
}
catch (Exception ex)
{
Log("Error receiving data: " + ex.ToString());
}
}
}
public bool Load(Stream stream)
{
_root = BencodingUtils.Decode(stream);
if (_root == null)
{
return(false);
}
var dictRoot = (_root as BDict);
if (dictRoot == null)
{
return(false);
}
if (dictRoot.ContainsKey(ANNOUNCE_KEY))
{
Announce = (BString)dictRoot[ANNOUNCE_KEY];
}
if (dictRoot.ContainsKey(ANNOUNCE_LIST_KEY))
{
var announceList = (BList)dictRoot[ANNOUNCE_LIST_KEY];
foreach (IBencodingType type in announceList)
{
if (type is BString)
{
AnnounceList.Add(type as BString);
}
else
{
var list = type as BList;
if (list == null)
{
continue;
}
var listType = list;
foreach (IBencodingType bencodingType in listType)
{
var s = (BString)bencodingType;
AnnounceList.Add(s);
}
}
}
}
if (dictRoot.ContainsKey(COMMENT_KEY))
{
Comment = (BString)dictRoot[COMMENT_KEY];
}
if (dictRoot.ContainsKey(CREATED_BY_KEY))
{
CreatedBy = (BString)dictRoot[CREATED_BY_KEY];
}
if (dictRoot.ContainsKey(CREATION_DATE_KEY))
{
long ts = (BInt)dictRoot[CREATION_DATE_KEY];
CreationDate = new DateTime(1970, 1, 1).AddSeconds(ts);
}
if (dictRoot.ContainsKey(INFO_KEY))
{
var infoDict = (BDict)dictRoot[INFO_KEY];
using (SHA1Managed sha1 = new SHA1Managed())
{
var str = BencodingUtils.EncodeBytes(infoDict);
Hash = sha1.ComputeHash(str);
}
if (infoDict.ContainsKey(FILES_KEY))
{
//multi file mode
var fileList = (BList)infoDict[FILES_KEY];
foreach (IBencodingType bencodingType in fileList)
{
var fileDict = (BDict)bencodingType;
var filename = string.Empty;
var filesize = default(Int64);
if (fileDict.ContainsKey(PATH_KEY))
{
var filenameList = (BList)fileDict[PATH_KEY];
foreach (IBencodingType type in filenameList)
{
filename += (BString)type;
filename += "\\";
}
filename = filename.Trim('\\');
}
if (fileDict.ContainsKey(LENGTH_KEY))
{
filesize = (BInt)fileDict[LENGTH_KEY];
}
Files.Add(filename, filesize);
}
}
if (infoDict.ContainsKey(NAME_KEY))
{
Name = (BString)infoDict[NAME_KEY];
if (Files.Count == 0 && infoDict.ContainsKey(LENGTH_KEY))
{
Files.Add(Name, (BInt)infoDict[LENGTH_KEY]);
}
}
if (infoDict.ContainsKey(PRIVATE_KEY))
{
var isPrivate = (BInt)infoDict[PRIVATE_KEY];
Private = isPrivate != 0;
}
if (infoDict.ContainsKey(PIECES_KEY))
{
var pieces = (BString)infoDict[PIECES_KEY];
for (var x = 0; x < pieces.ByteValue.Length; x += 20)
{
var hash = pieces.ByteValue.GetBytes(x, 20);
PieceHashes.Add(hash);
}
}
if (infoDict.ContainsKey(PIECE_LENGTH_KEY))
{
PieceSize = (BInt)infoDict[PIECE_LENGTH_KEY];
}
}
return(true);
}
public AnnounceInfo Announce(string url, string hash, string peerId, long bytesDownloaded, long bytesLeft, long bytesUploaded,
int eventTypeFilter, int ipAddress, int numWant, int listenPort, int extensions)
{
var hashBytes = Pack.Hex(hash);
var peerIdBytes = Encoding.ASCII.GetBytes(peerId);
var realUrl = url.Replace("scrape", "announce") + "?";
var hashEncoded = string.Empty;
foreach (byte b in hashBytes)
{
hashEncoded += string.Format("%{0:X2}", b);
}
var peerIdEncoded = string.Empty;
foreach (byte b in peerIdBytes)
{
peerIdEncoded += string.Format("%{0:X2}", b);
}
realUrl = BuildUrl(hashEncoded, peerIdEncoded, listenPort, bytesUploaded, bytesDownloaded, bytesLeft);
var webRequest = (HttpWebRequest)WebRequest.Create(realUrl);
webRequest.Accept = "*/*";
webRequest.UserAgent = $"{nameof(System)}.{nameof(Net)}.{nameof(Torrent)}";
var webResponse = (HttpWebResponse)webRequest.GetResponse();
var stream = webResponse.GetResponseStream();
if (stream == null)
{
return(null);
}
var binaryReader = new BinaryReader(stream);
var bytes = new byte[0];
while (true)
{
try
{
var b = new byte[1];
b[0] = binaryReader.ReadByte();
bytes = bytes.Concat(b).ToArray();
}
catch (Exception)
{
break;
}
}
var decoded = (BDict)BencodingUtils.Decode(bytes);
if (decoded.Count == 0)
{
return(null);
}
if (!decoded.ContainsKey(PEERS_KEY))
{
return(null);
}
if (!(decoded[PEERS_KEY] is BString))
{
throw new NotSupportedException("Dictionary based peers not supported");
}
var waitTime = 0;
var seeders = 0;
var leachers = 0;
if (decoded.ContainsKey(INTERVAL_KEY))
{
waitTime = (BInt)decoded[INTERVAL_KEY];
}
if (decoded.ContainsKey(COMPLETE_KEY))
{
seeders = (BInt)decoded[COMPLETE_KEY];
}
if (decoded.ContainsKey(INCOMPLETE_KEY))
{
leachers = (BInt)decoded[INCOMPLETE_KEY];
}
var peerBinary = (BString)decoded[PEERS_KEY];
return(new AnnounceInfo(GetPeers(peerBinary.ByteValue), waitTime, seeders, leachers));
}
void BencodeTest()
{
BDict torrentFile = BencodingUtils.DecodeFile(@"E:\Program Files (x86)\BitSpirit\Torrent - 副本\51C2F0FB04B2EFD2.torrent") as BDict;
}
public IDictionary <string, ScrapeInfo> Scrape(string url, string[] hashes)
{
var returnVal = new Dictionary <string, ScrapeInfo>();
var realUrl = url.Replace("announce", "scrape") + "?";
var hashEncoded = string.Empty;
foreach (string hash in hashes)
{
var hashBytes = Pack.Hex(hash);
hashEncoded = hashBytes.Aggregate(hashEncoded, (current, b) => current + string.Format("%{0:X2}", b));
realUrl += $"info_hash={hashEncoded}&";
}
var webRequest = (HttpWebRequest)WebRequest.Create(realUrl);
webRequest.Accept = "*/*";
webRequest.UserAgent = $"{nameof(System)}.{nameof(Net)}.{nameof(Torrent)}";
var webResponse = (HttpWebResponse)webRequest.GetResponse();
var stream = webResponse.GetResponseStream();
if (stream == null)
{
return(null);
}
var binaryReader = new BinaryReader(stream);
var bytes = new byte[0];
while (true)
{
try
{
var b = new byte[1];
b[0] = binaryReader.ReadByte();
bytes = bytes.Concat(b).ToArray();
}
catch (Exception)
{
break;
}
}
var decoded = (BDict)BencodingUtils.Decode(bytes);
if (decoded.Count == 0)
{
return(null);
}
if (!decoded.ContainsKey(FILES_KEY))
{
return(null);
}
var bDecoded = (BDict)decoded[FILES_KEY];
foreach (var k in bDecoded.Keys)
{
var dictionary = (BDict)bDecoded[k];
if (dictionary.ContainsKey(COMPLETE_KEY) && dictionary.ContainsKey(DOWNLOADED_KEY) && dictionary.ContainsKey(INCOMPLETE_KEY))
{
var rk = Unpack.Hex(BencodingUtils.ExtendedASCIIEncoding.GetBytes(k));
returnVal.Add(rk, new ScrapeInfo((uint)((BInt)dictionary[COMPLETE_KEY]).Value, (uint)((BInt)dictionary[DOWNLOADED_KEY]).Value, (uint)((BInt)dictionary[INCOMPLETE_KEY]).Value, ScraperType.HTTP));
}
}
return(returnVal);
}
public bool Load(Stream stream)
{
_root = BencodingUtils.Decode(stream);
if (_root == null)
{
return(false);
}
BDict dictRoot = (_root as BDict);
if (dictRoot == null)
{
return(false);
}
if (dictRoot.ContainsKey("announce"))
{
Announce = (BString)dictRoot["announce"];
}
if (dictRoot.ContainsKey("announce-list"))
{
BList announceList = (BList)dictRoot["announce-list"];
foreach (IBencodingType type in announceList)
{
if (type is BString)
{
AnnounceList.Add(type as BString);
}
else
{
BList list = type as BList;
if (list == null)
{
continue;
}
BList listType = list;
foreach (IBencodingType bencodingType in listType)
{
BString s = (BString)bencodingType;
AnnounceList.Add(s);
}
}
}
}
if (dictRoot.ContainsKey("comment"))
{
Comment = (BString)dictRoot["comment"];
}
if (dictRoot.ContainsKey("created by"))
{
CreatedBy = (BString)dictRoot["created by"];
}
if (dictRoot.ContainsKey("creation date"))
{
long ts = (BInt)dictRoot["creation date"];
CreationDate = new DateTime(1970, 1, 1).AddSeconds(ts);
}
if (dictRoot.ContainsKey("info"))
{
BDict infoDict = (BDict)dictRoot["info"];
using (SHA1Managed sha1 = new SHA1Managed())
{
byte[] str = BencodingUtils.EncodeBytes(infoDict);
Hash = sha1.ComputeHash(str);
}
if (infoDict.ContainsKey("files"))
{
//multi file mode
BList fileList = (BList)infoDict["files"];
foreach (IBencodingType bencodingType in fileList)
{
BDict fileDict = (BDict)bencodingType;
String filename = string.Empty;
Int64 filesize = default(Int64);
if (fileDict.ContainsKey("path"))
{
BList filenameList = (BList)fileDict["path"];
foreach (IBencodingType type in filenameList)
{
filename += (BString)type;
filename += "\\";
}
filename = filename.Trim('\\');
}
if (fileDict.ContainsKey("length"))
{
filesize = (BInt)fileDict["length"];
}
Files.Add(filename, filesize);
}
}
if (infoDict.ContainsKey("name"))
{
Name = (BString)infoDict["name"];
if (Files.Count == 0 && infoDict.ContainsKey("length"))
{
Files.Add(Name, (BInt)infoDict["length"]);
}
}
if (infoDict.ContainsKey("private"))
{
BInt isPrivate = (BInt)infoDict["private"];
Private = isPrivate != 0;
}
if (infoDict.ContainsKey("pieces"))
{
BString pieces = (BString)infoDict["pieces"];
for (int x = 0; x < pieces.ByteValue.Length; x += 20)
{
byte[] hash = pieces.ByteValue.GetBytes(x, 20);
PieceHashes.Add(hash);
}
}
if (infoDict.ContainsKey("piece length"))
{
PieceSize = (BInt)infoDict["piece length"];
}
}
return(true);
}
private string getName(string torrentPath)
{
BDict torrentFile = BencodingUtils.DecodeFile(torrentPath) as BDict;
return(((BString)((torrentFile["info"] as BDict)["name"])).Value);
}
/// <summary>
/// Background thread handling all incoming traffic
/// </summary>
private void ReceivePackets()
{
while (true)
{
try
{
// Get a datagram
receiveFrom = new IPEndPoint(IPAddress.Any, localPort);
// Stopwatch sw = new Stopwatch();
// sw.Start();
byte[] data = udpClientReceive.Receive(ref receiveFrom);
//if (sw.ElapsedMilliseconds > 10) { Console.WriteLine(sw.ElapsedMilliseconds); }
//sw.Stop();
// Decode the message
Stream stream = new MemoryStream(data);
IBencodingType receivedMsg = BencodingUtils.Decode(stream);
string decoded = BencodingUtils.ExtendedASCIIEncoding.GetString(data.ToArray());
//Log("Received message!");
// t is transaction id
// y is e for error, r for reply, q for query
if (receivedMsg is BDict) // throws error.. todo: fix
{
BDict dictMsg = (BDict)receivedMsg;
if (dictMsg.ContainsKey("y"))
{
if (dictMsg["y"].Equals(new BString("e")))
{
//Log("Received error! (ignored)");
}
else if (dictMsg["y"].Equals(new BString("r")))
{
// received reply
if (dictMsg.ContainsKey("r"))
{
if (dictMsg["r"] is BDict)
{
BDict dictMsg2 = (BDict)dictMsg["r"];
if (dictMsg2.ContainsKey("values"))
{
//Log("Received list of peers for torrent!");
countRecvPeerPackets++;
}
else if (dictMsg2.ContainsKey("nodes"))
{
// could be an answer to find node or get peers
//Log("Received list of nodeID & IP & port!");
countRecvNodePackets++;
BString nodeIDString = (BString)dictMsg2["nodes"];
UpdateContactList(nodeIDString);
}
else
{
// no values and no nodes, assuming its a ping,
// at least some form of response
}
}
else
{
}
}
}
else if (dictMsg["y"].Equals(new BString("q")))
{
// received query
countRecvQuery++;
//Log("Received query! (ignored)");
}
}
}
}
catch (Exception ex)
{
//Log("Error receiving data: " + ex.ToString());
}
}
}
